129
50
Sn


Basic Info

Fission Yield

element 		Information about Tin-129:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation
    Mass-Energy Data:

    Atomic Mass:128.913440±0.000131amu
    Excess Mass (Δ):-80.630131±0.121898MeV
    Binding Energy:1082.713103±0.121898MeV
    β- Decay Energy:3.996000±0.120000MeV
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra, Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
Radioactive Decay Data:

  • Spin: (3/2+)
  • Half life: 2.23 min ( 133.8 sec., λ = 0.00518047 s-1)
  • Mode of decay:
    β-
     to
    129
    51
    Sb
       (Q = 4.000 MeV)
    Meta state at 0.035 Mev
  • Spin: 11/2-) 2.23
  • Half life: 6.9 min ( 414 sec., λ = 0.00167427 s-1)
  • Mode of decay:
    β-
     to
    129
    51
    Sb
       (Q = 4.035 MeV)
  • Mode of decay: γ (IT) to
    129
    50
    Sn
       (Q = 0.035 MeV)   Branch ratio: <0.0020 %

  • Possible parent nuclides:
    β- from
    129
    49
    In
    β- +
    1
    0
    n from
    130
    49
    In
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)